Miter box



April 21, 1931. K R 1,801,372

MITER BOX Filed May 28, 1930 2 Sheets-Sheet l E. K. SPYKER April 21, 1931.

MITER BOX Filed May 28, 1930 2 Sheets-Sheet 2 Patented Apr. 21, 1931 PATENT OFFICE EPHRAIM K. SIPYKER, F SACRAMENTO, CALIFORNIA MI'IER IBOX Application filed May 28, 1930. Serial No. 456,650.

One object of this invention is to provide a miter box which can be taken apart readily and stowed in small compass in a tool box, or elsewhere. Another Object of the invention is to provide a miter box which will be simple to manufacture, easy to use, and capable of withstanding long continued wear and use. Another object of the invention is to provide novel means for adjusting the saw, either up and down, or upon an arc depending upon the angle on which the material 18 to be cut. A further object of the invention is to supply novel means for holding the material.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that sort to which the present invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes may be made in the precise embodiment of the invention herein disclosed, within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings:

Figure 1 shows in elevation, a device constructed in accordance with the invention;

Figure 2 is an end elevation;

Figure 3 is a top plan, parts being broken Figure 4 is a section on the line 4-4 of Figure 1;

Figure 5 is a section onthe line 55 of Figure 2.

The miter box forming the subject matter of this application comprises a base, which is designated generally by the numeral 1.

The base 1 comprises a table 2 having at its forward edge a depending leg 3, and at its rear edge depending legs 4. The leg 3 has an opening 5 into which a set screw 6 is threaded, it being possible to support the miter box by clamping it on a two-by-four, or other object, clamped between the legs 4 and the set screw 6.

Tubular guides 7 and 8 are threaded at 9 into the base 1. The numeral 10 designates a back plate supported on the base 1 and provided at its ends with curved fingers 11, forming sockets in which the tubular guides 7 and 8 are received, the back plate 10 thus being mounted removably on the guides 7 and8, and the guides being removable from the table 2 because they are threaded into it at 9.

The table 2 is supplied in its upper surface with a transverse undercut groove 12 in which a retainer 14, in the form of a bar, is slidable for adjustment. The retainer 14 has an upstanding projection 15 at one end, and is supplied with a longitudinal slot 16 in which is mounted a binding screw 17 carried by the table 2.

The numeral 18 designates an angular grip pivotally mounted intermediate its ends on a fulcrum bracket 19 carried by the guide 8. The bracket 19 carries a spring 20 which bears against one end of the grip 18 and causes the other end of the grip to enter a hole 21 in'the guide 8.

The numeral 22 designates generally, a verbeing slidable in the tubular guide 8, the grip 18 having a frictional hold on the post 25, under the impulse of the spring 20, in a way which will be understood readily when Figure 5 of the drawings is noted.

On one end of the top piece 23 of the slide 22 there is a forwardly extended segment 28 provided in its curved edge with seats 29 arranged in various ways, governed by the angles on which the material is to be cut in the machine.

The numeral 30 designates a saw guide made up of a body 31 in the form of a bar, supplied near to one end with a tubular bearing 32. The part 33 of the post 25 is received in the bearing 32, and the bearing 32 rests on the shoulder 27, the construction being such that the saw guide 30 may be swung as desired, depending upon the angle on which the work is to be cut. The body 31 of the saw guide 30 has depending arms 34: provided with slots 35 communicating with enlarged openings 36 in the arms 34:. On the body portion 31 of the saw guide 30 there is located a casing 37 having a finger 38 which overhangs the edge of the segment 28, to enhance the stability of the saw guide. A spring actuated latch 39 is mounted in the casing 37, and normally is held in engagement with one of the seats 29 in the segment 28.

In practical operation, the piece of matc rial that is to be cut is placed on the table 2 and is held against the back plate 10 by the upstanding finger 15 on the retainer 14, the retainer being held in any position to which it may have been adjusted transversely of the table 2, by tightening up the binding screw 17 that is shown in Figure 3 of the drawings.

By retracting the latch 39 and engaging it with the proper one of the seats 29 of the segment 28, the saw is positioned properly, with respect to the work, depending upon the angle at which the work is to be cut, it being possible to swing the saw guide 30 horizontally because the tubular bearing 32 of the saw guide can turn on the part 33 of the post 25.

The saw (not shown) reciprocates in the slots 35 of the arms 34. of the saw guide 30. If a back saw is used, the rib of the saw is received slidably in the openings 36. The slide 22 may be raised to any desired height, the post 25 moving upwardly in the guide 8, and the post 24 moving upwardly in the guide 7. As the saw cuts down into the work, the slide 22 will be carried down with the saw, because the grip 18 has merely a frictional hold on the post 25, as indicated in Figure 5 of the drawings, and does not have a positive interlocking engagement with the post.

The advantage of the device is that it can be taken down readily. The retainer 14, thus, can be removed from the table 2, and the guides 7 and 8 can be threaded out of the table. The posts 25 and 24 of the slide 22 can be withdrawn from the guides 8 and 7. It is possible, also, to thread the posts out of the top piece 23 of the slide 22 and,

therefore, the saw guide 30 can be removed from both posts 25.

What is claimed is:

In a miter box, a base including guides, a slide comprising a top piece, and posts slidable in the guides, a saw guide mounted to swing laterally 011 one of the posts, and means for retaining the guide in adjusted position.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

EPHRAIM K. SPYKER. 

